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Editor to share with you what the format of linux commands is, I believe most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Organize the command execution format and give examples

Command format: the command is entered at the line prompt (# for superuser, $for ordinary user)

The format is: command parameter target

Abbreviations of-parameter words in parameters

-- full spelling of parameter words

Help for commands: what is command (view the function of the command)

-- help (view help for commands)

[] the content added can be added or not.

... Multiple content can be added.

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E.g [root@localhost Desktop] $date-d-30day

At 20:54:21 on Monday, October 31, 2016, CST uses the date statement to query the time of the current system 30 days ago

[root@localhost Desktop] $passwd student

Change the password of user student. Use the password statement to change the password of a student user

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